var flag=false; 
function DrawImage(ImgD){ 
var w=650; 
var h=480; 
var image=new Image(); 
image.src=ImgD.src; 
if(image.width>0 && image.height>0){ 
flag=true; 
if(image.width/image.height>= w/h){ 
   if(image.width>w){ 
    ImgD.width=w; 
    ImgD.height=(image.height*h)/image.width; 
   }else{ 
    ImgD.width=image.width; 
    ImgD.height=image.height; 
   } 
   /*ImgD.alt="bigpic" */ 
} 
else{ 
   if(image.height>h){ 
    ImgD.height=h; 
    ImgD.width=(image.width*h)/image.height; 
   }else{ 
    ImgD.width=image.width; 
    ImgD.height=image.height; 
   } 
    /*ImgD.alt="bigpic" */ 
} 
} 
} 
